<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <script src="../vue.js"></script>
</head>
<body>
  <div id="app">{{msg}}</div>
  <script>
    const vm = new Vue({
      data:{
        msg:'hello vue'
      }
    })
    // vm.$mount('#app')

    //这种写法也很常见
    // new Vue({
    //   msg:'vue'
    // }).$mount('#app')

    
  </script>
</body>
</html>